Status of a collection of blood between the skull and dura. On CT, the EDH typically (though not always) has a biconvex shape, an adjacent skull fracture/scalp injury, and classically does not cross sutural margins. (In patients with skull fractures, especially those in children involving the sutures, this rule may not always apply.) The acute EDH is hyperdense, but may contain hypodense areas representing unclotted blood. As the EDH evolves, it gradually loses its hyperdensity and may appear iso/hypodense. On MRI, the acute EDH is hypo/isointense on T1 and very hypointense on T2, GRE, and SW-imaging. The inwardly displaced dura should be directly visualized on MR as a thin dark line on all pulse sequences.
Registration Status:
Qualified
Permissible Values:
Data Type:
Value List
Unit of Measure:
Ids:
Value
Code Name
Code
Code System
Code Description
Present
Present
Present
Absent
Absent
Absent
Indeterminate
Indeterminate
Indeterminate
Designations:
Designation:
Epidural hematoma status
Tags:
Designations:
Definition:
Status of a collection of blood between the skull and dura. On CT, the EDH typically (though not always) has a biconvex shape, an adjacent skull fracture/scalp injury, and classically does not cross sutural margins. (In patients with skull fractures, especially those in children involving the sutures, this rule may not always apply.) The acute EDH is hyperdense, but may contain hypodense areas representing unclotted blood. As the EDH evolves, it gradually loses its hyperdensity and may appear iso/hypodense. On MRI, the acute EDH is hypo/isointense on T1 and very hypointense on T2, GRE, and SW-imaging. The inwardly displaced dura should be directly visualized on MR as a thin dark line on all pulse sequences.
Tags:
Reference Documents:
ID:
Title:
URI:
Provider Org:
Language Code:
Document:
Duhaime AC, Gean AD, Haacke EM, Hicks R, Wintermark M, Mukherjee P, Brody D, Latour L, Riedy G; Common Data Elements Neuroimaging Working Group Members, Pediatric Working Group Members. Common data elements in radiologic imaging of traumatic brain injury. Arch Phys Med Rehabil. 2010 Nov;91(11):1661-6. [DOI: 10.1016/j.apmr.2010.07.238] Haacke, E.M., Duhaime, A.C., Gean, A.D., Riedy, G., Wintermark, M., Mukherjee, P., Brody, D.L., DeGraba, T., Duncan, T.D., and Elovic, E. (2010). Common data elements in radiologic imaging of traumatic brain injury. Journal of Magnetic Resonance Imaging 32, 516-543, DOI:10.1002/jmri.22259